thermal
1. ther.mal \'th*r-m*l\ \-m*-le-\ aj [Gk therme-] : of, relating to, or caused by heat : WARM, HOT - ther.mal.ly av 2. thermal n : a rising body of warm air
Webster's English Dictionary1. ther.mal \'th*r-m*l\ \-m*-le-\ aj [Gk therme-] : of, relating to, or caused by heat : WARM, HOT - ther.mal.ly av 2. thermal n : a rising body of warm air